Nothing against FourSquare or Color, but at this point in our smartphone-powered lives, the phrase "location aware" usually makes me want to run screaming. But the latest album from Bluebrain, a musical duo based on Washington D.C., does seem intriguing: they're releasing it as a smartphone app that uses GPS to track listeners' proximity to landmarks in and around the National Mall, subtly changing the sound of the music in the process. They're calling the app, naturally titled "The National Mall," "the first location-aware album."

Groupon is soaring like a rocket at the moment: Today it opens the Grouponicus Store, with Rihanna's new album as the star offering and social media links a-plenty built in. It's the latest sign that the check-in/coupon digital marketing phenomenon is exploding.